Personally, I get nauseous when I am stressed or nervous, so I would not rule it out. In fact, i think it is very likely, but obviously a possible reaction is more serious, so you at least want to think about it. Had you had the same feeling while out walking before your diagnosis? Have you had any contact with the nuts--have they fallen on you or are they smashed on the ground at your feet? You say you are allergic to almonds, but you have walnuts in your area--have you been tested for walnuts, or have you eaten them without reaction, or is there a possibility you are also allergic to them?